Elevator



(No Model.) 8 Sheets-Sheet 1.

T. J. THOR?. BLEVATOR.

No. 465,587. Patent-ed Deo. 22,1891.

' (No Model.) s sheetssheet 2.

T. J. THORP. ELEVATR.

No. 465,587. Patented'Deo. 22, 1891.

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(No Model.) 8 Sheets-Sheet 3. T. J. THOR?.

BLEVATOR. No. 465,587. y Patented Deo. 22, 1891.

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T. J. THORP.

BLEVATOR.

/fz'zesef I Y, 112.0012 for Patented Deo. 22, 1891..

T. J. THOR'P,

BLEVATOR.

No.- 465,587. PatentedDeo. 22, 1891.

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ELEVATOR.

(No ModeL) Patented Dec. 22, 1891.

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'(No' Model.)

T. J. THOR?.

` ELEVATOR. No. 465,587. Patented Dec. 22, 1891,

.fnl/enfer y@ no@ 29 2720272d @www (No Model.) 8 Sheets-Sheet 8.

T. J.. THOR?.

ELBVATOR.

No.`465,58'7. Patented Deo. 22,1891.

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l/mefss es l Jia/ verdor UNITED STATES PATENT OFFICE.

THOMAS J. TIIORI), OF CHICAGO, ILLINOIS.

ELEVATO R.

SFECFlCATION forming part of Letters Patent No. 465,587, dated December 22, 1891.

Application tiled July 13,1891. Serial No. 399,311. (No model.) C

To @ZZ whom t may concern.-

lle it known that l, THOMAS J. THORP, a citizen of the United States, residing at Chi cago, in the county of Cook and State of Illi- V nois, have invented a new and useful Improvement in Elevators, of which the following is a specification.

My invention relates to an improvement in the class of elevators for passenger and freight service. I design it for use either exclusively for carrying passengers in buildings, or both p passengers and freight, or exclusively freight,

, cuitous route in the shaft to the different iioors intersected by it.

Among the advantages incidental to my improvement may be mentioned those due to the employment of a number of cars on the endless carrier at intervals apart, causing them all to be brought simultaneously coincident with aA lloor at opposite sides of the elevatorshaft or with different floors, where- -by the cars may all be controlled from a single point, as by the engineer, from the operating-engine for starting them and for stopping them to take on and let off passengers and freight. Thus the convenience of the use of elevators may be enhanced and the common annoyance of long waiting avoided, besides overcoming the requirement for an attendant inside ea'ch'cLLr, reducing the liability of accident, and economizing by the use of one instead of a multiple number of elevatorshafts for any increase in the elevatorservice capacity.

My invention consists in the general plan off construction ot' my improvement.,

It also consists in details of construction and combinations of parts hereinafter described, and set forth in the claims.

In the accompanying drawings, Figure 1 is a view in sectional elevation in the nature of a diagram, showing my im proved elevator system, with the cars adapted especially for carryingpassengers in an elevator-shaft, the section being takenat the line 8 S on Fig. 2. Fig. 2isa view of the same in front elevation, with the floors intersected by the elevator-shaft, shown in section. Fig. 3 is a plan section on the line 2 2 of Fig. l and enlarged. Fig. et is a plan sectional view through the cables and showing their operating-gears and connections, the sectionbeing taken at the line 1 l on Fig. l, but with all other details of the system removed. Fig. 5 is a view in end elevation of a passenger-car. Fig. 6 is a similar view of a freight-car. Fig. 7 is a broken plan view showing one of the rotary driving-shafts and the connections adapting it for use in driving a passenger-car. Fig. S is a broken view of the same, showing' the cables and their.

connections and driving-gear in elevation.

Fig. 9 isa section through the aforesaid driv-r ing-shaft, taken at the line et 4 on Fig. 8 and enlarged. Fig. 10 is a similar view of the same, taken at the line 3 3 on Fig. Fig. 11 is a broken plan view showing a rotary driving-shaft and the connections adapting it for heavy-freight service. Figs. 12, 13, and 1+i are sectional' views taken, respectively, at the lines 5 7 7, and G G on Fig. 1 and enlarged. Fig. 15 is a vertical sectional view in the nature ot' a diagram through the elevator-shaft transversely of the cars and illustrating the working of the elevator-shaft doors. Fig. 16 is va view showing the elevator-shaft and illustrating the framedoors thereof and the mechanism for working them in elevation. Fig. 17 is asection taken transversely through two cars in the upper port-iomof the elevatorshaft and illustrating the automatic working of the caredoors. Fig. lSis an enlarged transverse section of a passenger-car, representing the outline thereof and the construction of the car-door and stop mechanism for operating it. Fig. 19 is a broken end View, and Fig. 2O a broken plan view, of a portion of the cardoor, showing the construction whereby it is rendered exible. Fig. 21 is a broken view IOO representing a freight-elevator car in longitudinal section in the elevator-shaft and mechanism for working a horizontal endless chain under a railway freight-car for moving the latter into and out of the elevator-car. Fig. 22 is a broken sectional view showing the aforesaid horizontal chain-and-coupler connection for the railway freight-car. Fig. 23 is a perspective view of the stirrup detail.

Arrows at section-lines in the details indicate the directions of regarding the latter.

S, Figrl, denotes the vertical elevator-shaft of the elevator system. The upper and lower ends of the shaft S are preferably arched, as shown, while the sides (which would ordinarily intersect more than the two doors represented lin Fig. l) are straight and provided with `guard-frames A", (see 15,) containing at thetloors T openings provided with vertically-sliding doors J, adapted'to be opened and closed, as hereinafter described. Endless guide-.tracks A, (see particularly Fig. 1.2,) flanged as shown, are provided to extend vertically entirely around the shaft S in the direction of curvature of the arched upper and lower ends, one at each side of the shaft, laterally of the .planes ofthe doors J. In these guide-tracks are confined 'the endless operating 'cable-'chains K, the details Vof 'the construction of which are most clearly lrepresented in Figs. S to l0, inclusive. vGenerally stated, each cable-chain K is yformed with `three parallel cables D, C, and D, the outer ones serving for ycontinual or regular use, while the intermediate one is more for safety purposes.` At intervals along vthe cables D,

C, and D and extending transversely ,between them kare the alternating connecting-bars d and d?, each carrying Vroller-heads d4, affordi'ngbearings loose upon its opposite extremijties, the bars being firmly secured in place upon the extreme cables D D by passing or "hitching each of the latter, as by a halfhitch around the bar,near its heads d, and

'extending veach Vcable above and "below the 'half-'hitch x through a stirrup d3 of peculiar constructien. All the stirrups d3, of Vwhich -manyare employed, involve the construction of lthat represented on alarger scale andmost clearly in Fig. 23. similar halves e c, each being roundedtoward yonef(the gear-engaging) end and bifurcatedy toward vits opposite end, the two parts beingV `lbolted `liatwise together andforining between them .an opening c for the passage through the-stirrup of a cable D or'C. Each bar d" that the cable C merely passes each alternate I form the 'stirrup in two bar d2, the latter being unprovided with a stirrup c. A cable-chain Kof the construction thus described in detail lies within a guide-track A, extending entirely around the inside of the shaft S at each side of the dooropenings in the guard-frames A. The inner rounded ends of the stirrups project into the shaft S to engage recesses b2, provided at intervals apart corresponding with those of the barsd and d2 in the perimeters of rigid circular heads b on the opposite ends of each passen ger-car B and freight-oar F, hereinafter described.

In the central part of the shaft S is supported an endless cable-chain K, constructed in every particular exactly like the lcablechain K, being only shorter than the latter. Itis supported on arc-shaped stationarybean ings w andv w', respectively above the plane of the uppermost and below that 'of the lowermost of the iioors `T, `and 4in an Aendless guide-track A, like that already described, extending about the two said bearings. Vrelative positions 'of 4the cable-'chains K and 'Kvare such .that the space between them in a right line at any point in 'the shaft S `is 'the same and of a width to accommodate carsB or F ina man ner to produce engagement with the recesses b'2 in the lheads Z2 on the ends of the `cars ofthe cable-'chain stirru ps d3 and'c in the order that the "latterreach'thein inthe travel vof the cable-chains.

A desirable form for the passenger-cars iB is'that illustrated of an Octagon between the circular headstb, though I do not limit my :imjprovement 'to any particular construction Iof car,wh'eth'er for passengerlservice or "exclusively for freight, though for the last-named purpose the 4construction ofthe car .F y(re-presented iin end elevation vand "by an outline in Fig. 6) is preferred. It 'is i'n'theform of acylinder having open ends, with the shell constructed intwo parts, the `upper of which turns inward toward its lower edges to'produce offsetsf and f2, affording atrack for a freight-car P,'(see Fig. 21,) hereinafter described, and from the offsets the ends yof `the edges vof the said upper portion of the shell turn vertically downward and form bearings f3 for shaliting, yalso hereinafter described, the edges turning thence inward to afford flanges f4,`to whichthe lower section of the icar, completing, with the aforesaid upper section thereof, the cylinder, is bolted, Iit vbeing further'bolted thereto'near its edges adjacent to the offsets fand f?, as shown.

It shouldhere be stated that when'the cars F are employed the-doors leading into the shaft S at the different 'floors will be in the shaftwalls at right angles to Vthose illustrated Vin Fig. 1., in order that the open ends of the car may be presented to them.. In other words, the cable-chains K and K will be arranged to travel in a plane at 'right angles to that of the doors. Obviously, however,freight+cars may be so constructedas to adapt'them to be placed and utilized like the cars B.

The

For driving the cable-chains K and K', I provide the mechanism represented dia-grammatically in Fig. 4. Below the planes of the uppermost and lowermost floors T areprovided at opposite sides of the shaft S rotary driving-shafts E, supported in suitable bearings to extend parallel with the length of the cars B. On the same horizontal planes as the shafts E are provided similar shafts E', one for each shaft E, at the inner sides of the cable-chain K'. Each' of the said shafts E and E' carries near each of its opposite ends a pair of pinions d, which by reason of their function, hereinafter described, of engaging the bars carrying the stirrups on the cablechains Iterm stirrup-pinions, the members of eachA pair being a distance apart corresponding with that between the roller-heads d* on each transverse bar in the cable-chains.`

.the shafts (or as many thereof as there are floors) at the right-hand outer side of the chain K andat the corresponding inner side of the chain K, as represented in Fig. 1. The pinions Z6 on the shafts protrude through the backs of the respective guide-tracks A, and their peripheral recesses are at intervals apart corresponding with those of the bars of the cable-chains, whereby in rotating they engage the latter successively at their rollerheads. The shafts E and E are geared, in the sets described, with the driving power, (indicated at WV in Fig. 1,) the lowcrmost shaft E of each set being directly geared therewith from its pinion E4, (see Fig. 2,) as indicated in Fig. l, and the others being geared successively one to the other at their gear-pinions E2 E3 to cause the pinions to rotate in contrary directions at opposite sides of the' cars.

The operation is as follows: With the cars (as the cars B) in position wherein they are supported between the cable-chains K and K in the shaft S by the stirrups d3 c', (which by the manner of fastening them in place operate as levers, having their fulcrums on the bars CZ' di) engaging the recesses b2 in the carvheads b, by actuating the driving-shafts the pinions CZG will be properly rotated. These pinions engage the bars CZ CZZin the respective endless cable-chains successively, and thereby cause the said chains to travel, with the rollerheads on the said bars revolving on the guidetracks confining them. The traveling cablechains engage at their stirrups Z3 c the recesses in the heads b of the cars, thereby supporting the latter and carrying them always in upright position around the elevator-shaft S to and from the several oors T in succession on Aopposite sides of the elevator-shaft.

Vhile it is within the spirit of my invention to employ only one car supported and actuated in the manner described, the intention is to use at least two, one of which shall always be ascending while the other is descending and at distances apart whereby they shall simultaneously be at a floor or different floors, and it is preferred to provide double Vthe number of cars that there are floors and to have them all stop simultaneously at the floors, entrances tothe shaft S being provided at opposite sides thereof, two for each floor, whereby passengers desiring to ascend may enter at one side of the shaft and those desiring to descend may enter at the other side. By thus providing the requisite number of cars the elevator capacity is increased with a single elevator-shaft in a degree adapted to meet all requirements, and

there need be no material wait-ing by passengers to take the elevator.

As hereinbefore suggested, the elevator system should be controlled from the operatingengine (indicated at Vt in Fig. l) to stop all the cars simultaneously at the floors they successively reach and to start them again. Suitable signaling or other means may be adopted and operated for notifying the -operator when to start the train.

Provision is made (see Figs. l5 to 20, inclusive) for automatically opening and closing doors in the cars B and opening by hand doors in the guard-frame A. The openings hereinbefore referred to as being provided in the frames A' at the, floors T at opposite sides of the shaft S contain each a vertically-sliding door J, those at one side of the elevator-shaft opening upward and those at the opposite side downward; The doors J are all connected together by means enabling them to be simultaneously operated by hand. At one outer side of the elevator-shaft are supported in suitable bearings, respectively near the lower and upper ends of the said shaft, rotary shafts L and K2, the former carrying a pair of cablepinions Z in vertical line with the doorsll near their lateral edges at one side of the elevatorshaft, and the latter carrying asimilar pair of cable -pinions 7a, the members of which align with those of the pairZ. Each pinion 7c is connected with the wheel Z directly below it by an endless chain X, fastened to projections] on the doors it passes. At the opposite side of the elevator-shaft are the rotary shafts N and M, (see Fig. 15,) corresponding` with and supported like the shafts L and K2 and carrying each a pair of cable-pinions k3 and Z3, respectively, connected together, like the pinions Z and Zt, by endless chains X'. The shaft L carries at one endl a cable-pinion Z2, connected with a similar pinion o4 on a shaft O by an endless chain o5, passing through guides 02 and o3, between which it carries a stop 0'. At the opposite end of the shaft L it carries a cable-pinion Z', connected by au IOO IIO

endless chain X2 with a similar pinion 7a on' the corresponding end of the shaft K2, and, as indicated by dotted lines in Fig. l5, the shafts L and K2' are geared by endless chains from their cable-pinions Z and 7c', respectively, with corresponding pinions on the shaftsN and M. Thus all the doors J, which counterbalance each other onv opposite sides of the elevator-shaft, may be simultaneously opened or closed by strain exerted in the proper direction for the purpose upon the chain o5, the

-movement of the doors being limited by the stop o between the guides o2 and o3;

Each car Bis open at opposite sidesto afford a doorway (see particularly Fig. 18) and is provided at opposite sides of each opening with guideways It, extending over two of the octagonal sides of the car and formed with stops h4 and 7T", respectively, at their upper and lower ends. In these guides are conlined at their lateral edges flexible doors Il. I form -the doors I-I of tubes h, (see Fig. 20,) each 1 door' in its lateral guides h6 I provide links h2, connecting the tube-sections 7i at pins 717,

- projecting from their closed ends.

The sliding doors H are intended to be'normally open-that is, raised-as represented at the right-hand side in Fig. 18, in which position they may be held by friction in the guides h6, though additional or other suitable means may be provided forA holding them open, if desired. 4It is onlyrequired to close' the door l-l of each car while it is passing through the garret or upper end of the shaft S.' To accomplish that end, I provide a spring-stop a in a bracket a on the ascension side of the upper end of the shaft in the path of the door projection h', which strikes the stop when the car passes the uppermost floor, whereby the continued movement of the car effects lowering of the door, the spring of the stop enabling it to yield to let the car pass readily when the dooris closed. yAt the opposite side of the shaft a similar contrivance a a is provided for automatically opening the door H preparatory to the descent of the car in the shaft.

Freight-elevator cars F are supported and' actuated in the same manner as the cars B, (the lower portions of which below their oors may be utilized for carrying freight,) except -that if the cars F, which are controlled by three sets of the cable-chains, be constructed like the illustration thereof in the drawings the doors in the elevator-shaft and the cablechains would have to be on different instead of corresponding sides of the elevator-shaft. The car F has journaled near its opposite pinion T on the shaft R.

ends in the bearings fs'below the plane of the track f f2, shafts R and R', each carrying a pair of rotary pinions T, about which passes an endless chain T5, formed with transverselyheaded bars T2 (like the bars CZ cl2) at equal intervals apart, the heads on the opposite projecting ends of each pin being adapted to enter the peripheral recesses in the pinions by the rotation of the latter, which drives the chain.

To the upper length of the chain T5 is fastenedrigidly an upright bracket T3, provided at its. upper end with a head T4, adapted to receive the link-and-pin coupling on the drawbar p at the end of a freight-car P.

On the upper side of each floor T, )referably at each side'(th`ough represented only on one inv Fig. 2l) of the elevator-shaft S, is supported a rack s4l for holding a spring-pawl s'2 on the handle end of a lever S5, extending through the floor and carrying at its lower end a pinion s3, meshing with a pinion s', to which it is linked, as indicated, and which is supported on a rotary shaft s, journaled in brackets S7, extending below the door, and carrying a pulley T. several shafts s at the different floors serve for connecting the shafts s together by endless chains t from floor to floor, whereby they may all be continuously driven by connection of the lowermost with the driving power. (Not shown.)

Then a freight-elevator car F, carrying a freight-car P, reaches a floor T at which it is desired to run out the car P, an operator at that Hoor turns the lever S5 from the position shown of the uppermost said lever in Fig. 2l to that shown of the lowermost in the same figure, thereby throwing the pinion s3, which is being continuously rotated by engagement with the rotating pinion s, into mesh with a This operates the chain T5, through the medium of the bracket T3, to expel the car P out of the elevator-car F, when the lever s2 is. turned back to separate the gear-wheel s3 from the gear-wheel T to stop the motion of the chain T5, the. extent of movement of the bracket T3 being between stops U, at either of which' it normally remains. Thus when the car P has been expelled from one end of an elevator-car F in the manner described the bracket T3 thereof will be left at such end ready to have coupled with it a freight-car on some other floor, to be drawn into the elevator-car by properly turning the respective lever s2, stated to be on that side of the shaft S, to actuate the gear sS it controls to effect rotation of the shaft R in the direction that will move theendless cable The pulleys T on the IOO TIO

IIS

T5 in the direction for drawing the freight car The foregoing description and the drawings set forth my improvement with the details of construction which I believe to .be adapted best to serve the purposes forwhich they are used. I do not, however, wish tov be understood as confining my invention to mere details of construction, particularly as those shown and described may in various instances doubtless be modified by those skilled in the art to which my improvement relates. This would not, however, entail departure from my invention, which I intend to claim as broadly `and comprehensively as the state of the art will warrant.

What I claim as new, and desireto secure by Letters Patent, is-

l. In an elevator, the combination of an elevator-shaft, endless traveling cablechains supported to extend vertically in the shaft, respectively, along its longitudinal central portion and near its walls, openings leading into the shaft at different floors, and an elevator-car having heads extending about it and supported at opposite sides of said heads and carried hby engagement therewith of the said central and outer cable-chains in an upright position throughout its course in the shaft, substantially as described.

2. In an elevator, the combination of an elevator-shaft having at the floors openings at opposite sides of the said shaft leading into it, endless traveling cable-chains supported to extend vertically in the shaft, respectively, along its longitudinal central portion and near its walls, and elevator-cars having heads extending about 'them and supported at opposite sides of said heads and carried by engagement thereof of the said central and outer cable-chains at intervals apart corresponding with intervals between said floors and in upright position throughout their course in the shaft, substantially as described.

3. In an elevator, the combination of an elevator-shaft, endless traveling cable-chains extending vertically in the shaft and each formed with cables D, bars at intervals between the cables and about which they are hitched, and stirrups on the bars and through which the cables extend, and one or more elevatorcars having recesses b2 engaged by the stirrups successively in the movement of the traveling chains, the bars being thereby supported and carried by the cable-chains, substantially as described.

il. In an elevator, the combination of an elevator-shaft, endless traveling cable-chains extending vertically in the shaft and each formed with cables D D and an intermediate cable C, bars t7', carrying stirrups d, through which the said cables extend, and bars (Z2, alternating with the bars d', the cables D being` hitched about the said bars, and one or more elevator-cars engaged by the stirrups and thereby supported on and carried bythe ,ported to extend vertically in the shaft along the sides thereof and at its center, endless ltraveling cable-chains K and K', confined, re-

spectively, in the said side and central guide tracks and each being formed with cables D, bars at intervals between the cables and about which they are hitched and carrying loosely at their opposite ends roller-heads di, and stirrups d on the bars and through which the cables extend, and one or more elevator-cars engaged by the stirrups and thereby supported on and carried between the cablechains K and K', substantially as described.

6. In an elevator, the combination of an elevator-shaft S, endless guide-tracks A, supported to extend vertically in the shaft along the sides thereof and at its center, endless traveling cable-chains K and K', contined,re spectively, in the said side and central guidetracks and each comprising cables D D and an intermediate cable C, bars d', carrying stirrups d3 and c', through which the said cabars CZ', the said bars carrying loosely at their opposite ends roller-heads d" and the cables or more elevatore-ars provided with heads l) near their opposite ends and having recesses b2, into which the stirrups on the cable-chains K and K enter and support and carry the said car or cars, substantially as described.

7. In an elevator, the combination of an elevator-shaft S, endless guide-tracks A, supported to extend vertically in the shaft along the sides thereof and at its center, endless cable-chains K and K', confined, respectively, in the said side and central guide-tracks, one or more elevator-cars supported by and carried between the cable-chains K andK, driving-shafts E at different floors, carrying pinions engaging the cable-chains K to support and drive them and geared together and with the driving power, and driving-shafts E at different floors, carrying pinions engaging the cable-chains K to support and drive them and geared together and with the driving power, substantially as described. i

8. In an elevator, the combination of an elevator-shaft S, endless guide-tracks A, sup ported to extend vertically in the shaft along the sides thereof and at its center, endless cable-chains K and K', confined, respectively, in the said side and central guide-tracks, and `each comprising cables D D and an intermediate cable C, bars d', carrying stirrups cl3 and c',through which the said cables extend, and bars d2, alternating with the bars cl', the said bars carrying loosely at their opposite ends roller-heads d4 and the cables D being hitched about the said bars, one or more elewith heads l), having recesses h2, into which the stirrups of the cable-chains K and K' enter and support and carry the said car or cars, drivingshafts E at different floors, carrying pinions d6, engaging the cable-chains K at their said bars to support and drive the said bles extend, and bars d2, alternating with the D being hitched about the said bars, and one IOO IIO

vatoncars provided each at its opposite ends chains and geared together-and with the driving power, and driving-shafts E at different floors, carrying pinionscl, engaging the cable? chains K at their said bars to support and drive the said chains and geared together and with the driving power, substantially as described.

9. In an elevator, the combination of a shaft S, having a guard-frame A at opposite sides, provided with door-openings at the Iioors in opposite sides of the shaft, an endless series of elevator-cars simultaneously movable in the shaft to and from the said openings, and vertically-sliding doorsJ in the said openings Working in contrary directions and connected together -to counterbalance each other and to i be operated simultaneously from a single p 4 l.

. tai-ning endless traveling cable chain-s expoint, substantially as described.

- `l0. In an elevator having a shaft S, con-Q taining endless traveling cable-chains ex-V tending vertically in the shaft and one or more Aelevator-cars supported on and carried l bythesaid-cable-chains, and an elevator-car B, having a flexible door H, comprising the connected tubular sections h and hsupported in guides 7L at the opposite sides of the doorop'en'in'g in the car, substantially as described. 11. in an elevator 'having a shaft S, containing endless 'traveling cable-chains extending vertically in the shaft and one or more elevatordcars supported on vand carried by the said cable-chains, an elevator-car B, having a't-opposite sides exible doors H. each comprising the connected tub-ular sections 7L and h3, supported in guides h6 at the opposite sides Iof the door-opening in the car, aprojection h on each door, and spring-stops in the upper portion and at opposite sides of the elevatorshaft 'in the path 'of the projections h on the said doors, substantially as and for the purpose set forth.

12. In ,an elevatorhaving a shaft S, c011- taining endless traveling cable-chains eX- tending vertically in the shaft and one or more elevator-cars supported on and carried by the said cable-chains, an elevator-'car F, open at opposite ends and containing a freight-car track, an endless vchain ri below the track, and a bracket r3, fastened to the chain, and gear mechanism, substantially as described, 'laterally of the elevator-shaft Where'the car F is presented endvvise and adj ustable at will to connect the chain r5 with and vdisconnect it from the driving power, substantially as and for the purpose set-forth.

V18. In yan Velevator having,f a Jshaft S, contending vertically in the shaft and vone or more elevatorcars supported v'on and "carried by the said cable-chains, an elevator-car F, open :at opposite ends and containing a "freight-'car track, shafts R and R', jo'urnaled vbelow the track and carrying pinions r land r, connected by an'endl-ess chai-n riabracket ryfastened to the said chain, vand mechanism at "each of `di'erent oors, vintersectedloy'the shaft S, for operating lthe endless chain 7", 'comprisinga rack s4, a lever s2, carryingffa pinion 53,'and a bracket S7, carrying a pinion 8 l'on a normal1y-`rotating lshaft s, "to which the :pinion s3 is linked, the Whole being "constructed and arranged to operate substantial-ly as and for the purpose set forth.

THOMAS J. THORP.

`:'[n presence of- H. J. FRos'r, J. N. I-IANsoN. 

